Genome‐wide analysis and transcriptional regulation of the typical and atypical thioredoxins in <i>Arabidopsis thaliana</i>

Chibani, Kamel; Pucker, Boas; Dietz, Karl‐Josef; Cavanagh, Amanda P.

doi:10.1002/1873-3468.14197

Cited by 27 publications

(33 citation statements)

References 109 publications

(85 reference statements)

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“…In addition to antioxidant enzymes, TRXs and glutaredoxins (GRXs) are important antioxidant proteins in cells [ 55 ]. TRXs, which play a role in cellular redox systems by facilitating the reduction of other proteins via their dithiol-disulfide active site, reduce oxidative stress and other environmental stresses, protect proteins from oxidative aggregation and inactivation to promote protein folding, regulate apoptosis via denitrosylation, and modulate inflammation [ 47 , 56 ]. Like TRXs, GRXs are a kind of thioldisulfide oxidoreductases involved in the protection and repair of protein and nonprotein thiols under oxidative stress [ 57 , 58 ].…”

Section: Discussionmentioning

confidence: 99%

Comparative Transcriptomics Analysis of Roots and Leaves under Cd Stress in Calotropis gigantea L.

Yang

Zhang

et al. 2022

IJMS

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Calotropis gigantea is often found in mining areas with heavy metal pollution. However, little is known about the physiological and molecular response mechanism of C. gigantea to Cd stress. In the present study, Cd tolerance characteristic of C. gigantea and the potential mechanisms were explored. Seed germination test results showed that C. gigantea had a certain Cd tolerance capacity. Biochemical and transcriptomic analysis indicated that the roots and leaves of C. gigantea had different responses to early Cd stress. A total of 176 and 1618 DEGs were identified in the roots and leaves of C. gigantea treated with Cd compared to the control samples, respectively. Results indicated that oxidative stress was mainly initiated in the roots of C. gigantea, whereas the leaves activated several Cd detoxification processes to cope with Cd, including the upregulation of genes involved in Cd transport (i.e., absorption, efflux, or compartmentalization), cell wall remodeling, antioxidant system, and chelation. This study provides preliminary information to understand how C. gigantea respond to Cd stress, which is useful for evaluating the potential of C. gigantea in the remediation of Cd-contaminated soils.

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Section: Discussionmentioning

confidence: 99%

Comparative Transcriptomics Analysis of Roots and Leaves under Cd Stress in Calotropis gigantea L.

Yang

Zhang

et al. 2022

IJMS

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“…2A). Redox regulation plays an important role in plant leaf senescence and abiotic stress tolerance [30][31][32]. The observation that ATAF2 regulates the expression of multiple redox genes (Figs 1 and 2) may be relevant to its function in leaf senescence and stress response.…”

Section: Discussionmentioning

confidence: 99%

The NAC transcription factor ATAF2 promotes ethylene biosynthesis and response in Arabidopsis thaliana seedlings

et al. 2022

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Arabidopsis thaliana activating factor 2 (ATAF2) plays extensive regulatory roles in pathogenesis, seedling development, and stress responses. Here, we performed transcriptome analysis on ATAF2 loss‐ and gain‐of‐function mutants to identify differentially expressed genes (DEGs). Gene ontology analyses on DEGs reveal that ATAF2 enhances seedling responses to multiple hormone and stress signals. In particular, our transcriptome analysis suggests that ATAF2 promotes ethylene biosynthesis and responses via activating relevant genes. This novel role of ATAF2 was further demonstrated by using multiple ATAF2‐null and overexpression lines for reverse transcription quantitative PCR verification, ethylene production measurements, and assays of seedlings growth responses to the ethylene immediate biosynthetic precursor 1‐aminocyclopropane‐1‐carboxylic acid (ACC). ACC suppresses ATAF2 expression to form a negative feedback regulation loop.

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“…1 hub gene responsible for producing LEA _2 protein for transport of other proteins to floral parts during dormancy has earlier been reported in almond during bud dormancy ( Prudencio et al, 2018 ) and Arabidopsis under environmental fluctuations ( Hundertmark and Hincha, 2008 ). DUH011979.1 hub gene coding for TRX proteins during the dormant period was found earlier in Arabidopsis under cold stress conditions ( Calderón et al, 2018 ; Chibani et al, 2021 ).…”

Section: Discussionmentioning

confidence: 99%

Comprehensive Biochemical, Physiological, and Transcriptomic Analyses Provide Insights Into Floral Bud Dormancy in Rhododendron delavayi Franch

et al. 2022

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Due to a scarcity of relevant data, the ornamental woody flower Rhododendron delavayi Franch. is examined in the current study for its low temperature-induced floral bud dormancy (late October–end December) aspect. This study used transcriptome data profiling and co-expression network analyses to identify the interplay between endogenous hormones and bud dormancy phases such as pre-dormancy, para-dormancy, endo-dormancy, eco-dormancy, and dormancy release. The biochemical and physiological assays revealed the significance of the abundance of phytohormones (abscisic acid, auxin, zeatin, and gibberellins), carbohydrate metabolism, oxidative species, and proteins (soluble proteins, proline, and malondialdehyde) in the regulatory mechanism of floral bud dormancy. The transcriptome sequencing generated 65,531 transcripts, out of which 504, 514, 307, and 240 expressed transcripts were mapped uniquely to pre-, para-, endo-, and eco-phases of dormancy, showing their roles in the stimulation of dormancy. The transcripts related to LEA29, PGM, SAUR family, RPL9e, ATRX, FLOWERING LOCUS T, SERK1, ABFs, ASR2, and GID1 were identified as potential structural genes involved in floral bud dormancy. The transcription factors, including Zinc fingers, CAD, MADS-box family, MYB, and MYC2, revealed their potential regulatory roles concerning floral bud dormancy. The gene co-expression analysis highlighted essential hub genes involved in cold stress adaptations encoding proteins, viz, SERPIN, HMA, PMEI, LEA_2, TRX, PSBT, and AMAT. We exposed the connection among low temperature-induced dormancy in floral buds, differentially expressed genes, and hub genes via strict screening steps to escalate the confidence in selected genes as being truly putative in the pathways regulating bud dormancy mechanism. The identified candidate genes may prove worthy of further in-depth studies on molecular mechanisms involved in floral bud dormancy of Rhododendron species.

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Genome‐wide analysis and transcriptional regulation of the typical and atypical thioredoxins in Arabidopsis thaliana

Cited by 27 publications

References 109 publications

Comparative Transcriptomics Analysis of Roots and Leaves under Cd Stress in Calotropis gigantea L.

Comparative Transcriptomics Analysis of Roots and Leaves under Cd Stress in Calotropis gigantea L.

The NAC transcription factor ATAF2 promotes ethylene biosynthesis and response in Arabidopsis thaliana seedlings

Comprehensive Biochemical, Physiological, and Transcriptomic Analyses Provide Insights Into Floral Bud Dormancy in Rhododendron delavayi Franch

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